Impact of wind-induced resuspension on urban air quality: a CFD study with air quality data comparison

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dc.contributor.authorLinda, Jakubcs
dc.contributor.authorHasečič, Amracs
dc.contributor.authorPospíšil, Jiřícs
dc.contributor.authorKudela, Liborcs
dc.contributor.authorBrzezina, Jáchymcs
dc.coverage.issue1cs
dc.coverage.volume8cs
dc.date.accessioned2025-04-04T11:56:42Z
dc.date.available2025-04-04T11:56:42Z
dc.date.issued2025-02-25cs
dc.description.abstractWind-induced particulate matter (PM) resuspension is an increasingly recognized contributor to urban air pollution. A CFD model of 2D street canyon geometry was developed that can replicate the process of resuspension. Model created the wind speed vs concentration increase due to resuspension relationship and its key properties: threshold wind speed causing resuspension (TWSR) and concentration increase. At least 8.75 m/s in 10 m height inlet wind speed before street canyons was needed to start the resuspension, leading to PM10 concentrations often exceeding 1 mu g/m(3), with peak values reaching as high as 3 mu g/m(3). The model can predict the behavior of resuspension well, but it cannot capture all the factors acting in the real environment to match precisely the air quality data. Silt load remains the greatest unknown factor in determining the overall magnitude of resuspension, with observed increases in PM10 concentrations up to 6 mu g/m(3) in air quality data.en
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationnpj Climate and Atmospheric Science. 2025, vol. 8, issue 1, p. 1-14.en
dc.identifier.doi10.1038/s41612-025-00969-2cs
dc.identifier.issn2397-3722cs
dc.identifier.orcid0000-0002-2420-3078cs
dc.identifier.orcid0000-0002-2437-538Xcs
dc.identifier.orcid0000-0001-8596-8755cs
dc.identifier.other197378cs
dc.identifier.researcheridA-5128-2016cs
dc.identifier.scopus35568432100cs
dc.identifier.scopus57202204633cs
dc.identifier.urihttps://hdl.handle.net/11012/250773
dc.language.isoencs
dc.publisherNATURE PORTFOLIOcs
dc.relation.ispartofnpj Climate and Atmospheric Sciencecs
dc.relation.urihttp://nature.com/articles/s41612-025-00969-2cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2397-3722/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectResuspensionen
dc.subjectCFDen
dc.subjectmodelen
dc.subjectPMen
dc.subjectparticlesen
dc.subjectvalidationen
dc.titleImpact of wind-induced resuspension on urban air quality: a CFD study with air quality data comparisonen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.grantNumberinfo:eu-repo/grantAgreement/TA0/CK/CK04000264cs
sync.item.dbidVAV-197378en
sync.item.dbtypeVAVen
sync.item.insts2025.04.04 13:56:42en
sync.item.modts2025.04.03 09:32:06en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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